Suction-nozzle.



O. L. GOUGHNOUR.

SUCTION NOZZLE. APPLICATION FILED Mu1o,1911.

1,039,383. Patented Sept. 24, 1912.

UNITED sTATEs PATENT OFFICE.

CHARLES L. GOUGHNOUR, F CANTON, OHIO, ASSIGNOR TO THE UNITED ELECTRIC COMPANY, OF CANTON, OHIO, A CORPORATION OF OHIO.

SUCTION-NOZZLE.

To all whom it may concern:

Be it known that I, CHARLES GoUcH- NOUR, a citizen of the United States, residing at Canton, in the county of Stark and i State of Ohio, have invented certain new wood, cement and other impervious floors and surfaces; and the general objects of the improvement are to provide means for securing a constant suction throughout the cavity of the nozzle and the length of the intake slot, and to provide means for varying the interval between the respective lips pf the slot and the impervious floor or surace.

In this class of work, it'is desirable to keep the lips of the nozzle near to but not in contact with the surface to be cleaned, so that dust and dirt can be freely drawn under the lips into the mouth of the nozzle; which interval between the lips and the surface renders it desirable, if not necessary, that the suction shall be uniform throughout the length of the slot, so that the whole extent of the same will be equally efficient. And it is also desirable that the lips on opposite sides of the slot shall be held, either at the same distance from the surface, or that this distance shall be varied at will for the opposite lips to suit the exigencies of the work. .For instance, if the nozzle is approaching a considerable accumulation 'of sand or dust, it is desirable, if not necessary, that the lip on the corresponding side of the slot shall be raised to increase t e interval between the lip and the floor for increasing the volume of air and more readily receiving the material, and that the lip on the other side of the slot shall be depressed to lessen the corresponding interval, thus creating a greater volume of suction from the side which is doing the greater work.

These general objects, and other ancillary advantages, are attained by shaping the cavity of the nozzle with a regularly decreasing cross area inversely proportioned to the area of one-half the common shank opening, and the distance from the median line; and by providing a spring cushioned adjustable roller ,bearing of less diameter Specification of Letters I'atent.

Application filed May 10, 1911.

Patented Sept. 24, 1912.

Serial No. 626,356.

than the width of the lips in each lateral end of the nozzle in alincment with the slot opening thereof; all as illustrated for a preferred embodiment of the invention, in the accompanying drawing, forming part hereof, in which- Figure 1 is a front elevation of a suction nozzle with one lateral end in section to show details of construction; Fig. 2, an under side plan View of the nozzle; Fig. 3, a transverse sect-ion of the shank of the nozzle as at line 33, Fig. 1; Figs. 4, 5, 6 and 7, cross sections as on lines 4-4, 5-5, 6-43, and 77, Fig. 1; Fig. 8, a section on line 8-8, Fig. 1; and Fig. 9, a longitudinal section through the shank of the nozzle, showing in broken and dotted lines the forward and rearward tilted positions thereof.

Similar numerals refer to similar parts throughout the drawing.

The nozzle 1 is preferably made of metal with the hollow 0r tubular shank 2, from which the nozzle is flattened in its depth, and extended laterally to form the ends 3 and the straight parallel lips 4 with the in tervening elongated narrow intake slot 5. the opening areaof which is substantially the same as the cross area of the opening in the shank.

The cavity of the nozzle is shaped so that each lateral half is substantially of the same cross area from the shank, (as shown in Fig. 3 for line 3-3,.Fig. 1), to the cross section of each lateral half passing through the median line of the slot, (as shown in Fig. 4 for line 4-4, Fig. 1) and from such median-line section the cross area of the cavity regularly decreases in proportion to the distance thereof from the median line, (as shown in Figs. 5, 6 and 7 for lines 5-5, 6-6 and 7-7, Fig. 1); so that the cross area of the cavity at any given point is substantially equal to the area of the slot opening beyond said point. This shaping of the cavity of the nozzle not only insures a substantially uniform suction or velocity of the air through the intake slot throughout its length, but also insures a steady and substantially constant movementor velocity of the air currents throughout all parts of the cavity of the nozzle, and prevents any eddying or irregularities in speed of the air currents, and the consequent separation and settling of the dust, in any part of the nozzle cavity. This shaping of the nozzle also avoids the consumption of unnecessary power in drawing air from the ends of the tool through any relatively constricted area in the cavity of'the nozzle.

The socket 6' is provided in each lateral end of the nozzle, inwhich is located the bearing 7 for the roller, which is preferably in the form of the ball 8 and normally protrudes from the lower end of the bearing,

The roller bearing furnishes an antifriction support for the nozzle, and holds the lips from abrading the floor. The bearing stem 9 extends upward through the aperture 10 in the nozzle wall, on the upper side of which islocated the adjusting nut 11 by means of which the hearing may be drawn upward against the action of the coil spring 12 located around the stem in the socket and 'the extension 13 provided therefor in the wall of the nozzle.

The arrangement of theparts and the resilience of the spring are-such that the roller bearing protrudes below the lips of the nozzle to such distance as is permitted by the in diameter than the width between the outer edges of the lips, so that the nozzle may be tilted 0r, oscillated on the bearings to bring either one lip or the other of the nozzle nearer to, and the other lip farther from, the surface to be cleaned; thus controlling at will the relative volume of air which may enter the slot under either lip of the nozzle.

1 claim:

1. A suction cleaning nozzle having a substantially equal area in the opening of its shank and the intake slot, and having substantially, constant cross area from the shank to the median line of the intake slot,

and thence wit-h a regularly decreasing cross area inversely proportioned to the distance from tne median lme, so that the cross area at any given point is substantially equal to the area of the slot opening beyondv said point, i

2. A suction cleaning nozzle having parallel lips forming an intake slot, with normally-protruding spring-cushioned roller bearings at the ends of the slot and in alinement therewith, the bearings being of less diameter than the width of the lips, whereby the lips can be alternately oscillated to and from the cleaning surface.

3. A suction cleaning nozzle having parallellips forming an intake slot, with normally-protruding roller bearings at the ends of the slot and in alineinent therewith, the bearings being of lessdiameter than the width of the lips, whereby the lips can be alternately oscillated to and from the cleana ing surface.

CHARLES L. GOUGHNOUR. Witnesses: Y

R. F. KoHL, RUTH A. MILLER.

the cavity of each lateral half shaped with a 

